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arXiv · 1212.4809

Sivers asymmetry of Drell-Yan production in small-$x$ regime

Zhong-Bo Kang·Bo-Wen Xiao
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Abstract

We study the Sivers single spin asymmetry of the Drell-Yan lepton pair production in the small-$x$ regime. We find that in the corresponding kinematic region the spin asymmetry calculated in the small-$x$ approach is consistent with either the usual transverse-momentum-dependent factorization formalism or the collinear factorization formalism, respectively. We estimate the Sivers asymmetry for both polarized p+p and p+A collisions and argue that the Drell-Yan production is an interesting and unique probe for both the transverse spin physics and the small-$x$ saturation effect.

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Zhong-Bo Kang, Bo-Wen Xiao. 2012-12-19. Sivers asymmetry of Drell-Yan production in small-$x$ regime. https://doi.org/10.1103/physrevd.87.034038

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